DIN EN ISO 15186-3-2010 Acoustics - Measurement of sound insulation in buildings and of building elements using sound intensity - Part 3 Laboratory measurements at low frequencies .pdf

1、December 2010 Translation by DIN-Sprachendienst.English price group 11No part of this translation may be reproduced without prior permission ofDIN Deutsches Institut fr Normung e. V., Berlin. Beuth Verlag GmbH, 10772 Berlin, Germany,has the exclusive right of sale for German Standards (DIN-Normen).I

2、CS 91.120.20!$ldC“1736532www.din.deDDIN EN ISO 15186-3Acoustics Measurement of sound insulation in buildings and of building elementsusing sound intensity Part 3: Laboratory measurements at low frequencies (ISO 15186-3:2002)English translation of DIN EN ISO 15186-3:2010-12Akustik Bestimmung der Scha

3、lldmmung in Gebuden und von Bauteilen ausSchallintensittsmessungen Teil 3: Messungen bei niedrigen Frequenzen im Prfstand (ISO 15186-3:2002)Englische bersetzung von DIN EN ISO 15186-3:2010-12Acoustique Mesurage par intensit de lisolation acoustique des immeubles et des lments deconstruction Partie 3

4、: Mesurages en laboratoire de basses frquences (ISO 15186-3:2002)Traduction anglaise de DIN EN ISO 15186-3:2010-12www.beuth.deDocument comprises pagesIn case of doubt, the German-language original shall be considered authoritative.1912.10 DIN EN ISO 15186-3:2010-12 2 A comma is used as the decimal m

5、arker. National foreword This standard has been prepared by Technical Committee ISO/TC 43/SC 2 “Building acoustics” (Secretariat: DIN, Germany) in collaboration with Technical Committee CEN/TC 126 “Acoustic properties of building elements and of buildings” (Secretariat: AFNOR, France). The responsib

6、le German body involved in its preparation was the Normenausschuss Materialprfung (Materials Testing Standards Committee), Working Committee NA 062-02-31 AA Schalldmmung und Schall-absorption, Messung und Bewertung. The DIN Standards corresponding to the International Standards referred to in this d

7、ocument are as follows: ISO 140-1 DIN EN ISO 140-1 ISO 140-3 DIN EN ISO 140-3 ISO 140-10 DIN EN 20140-10 ISO 9614-1 DIN EN ISO 9614-1 IEC 60942 DIN EN 60942 IEC 61043 DIN EN 61043 In Subclauses 5.2 and 5.3, the term “small building elements” is used. For the definition of this term see DIN EN ISO 10

8、140-2. National Annex NA (informative) Bibliography DIN EN 20140-10, Acoustics Measurement of sound insulation in buildings and of building elements Part 10: Laboratory measurement of airborne sound insulation of small building elements DIN EN 60942, Electroacoustics Sound calibrators DIN EN 61043,

9、Electroacoustics Instruments for the measurement of sound intensity Measurement with pairs of pressure sensing microphones DIN EN ISO 140-1, Acoustics Measurement of sound insulation in buildings and of building elements Part 1: Requirements for laboratory test facilities with suppressed flanking tr

10、ansmission DIN EN ISO 140-3, Acoustics Measurement of sound insulation in buildings and of building elements Part 3: Laboratory measurements of airborne sound insulation of building elements DIN EN ISO 9614-1, Acoustics Determination of sound power levels of noise sources using sound intensity Part

11、1: Measurement at discrete points EUROPEAN STANDARD NORME EUROPENNE EUROPISCHE NORM EN ISO 15186-3 September 2010 ICS 91.120.20 English Version Acoustics - Measurement of sound insulation in buildings and of building elements using sound intensity - Part 3: Laboratory measurements at low frequencies

12、 (ISO 15186-3:2002) Acoustique - Mesurage par intensit de lisolation acoustique des immeubles et des lments de construction - Partie 3: Mesurages en laboratoire de basses frquences (ISO 15186-3:2002) Akustik - Bestimmung der Schalldmmung in Gebuden und von Bauteilen aus Schallintensittsmessungen - T

13、eil 3: Messungen bei niedrigen Frequenzen im Prfstand (ISO 15186-3:2002) This European Standard was approved by CEN on 5 August 2010. CEN members are bound to comply with the CEN/CENELEC Internal Regulations which stipulate the conditions for giving this European Standard the status of a national st

14、andard without any alteration. Up-to-date lists and bibliographical references concerning such national standards may be obtained on application to the CEN Management Centre or to any CEN member. This European Standard exists in three official versions (English, French, German). A version in any oth

15、er language made by translation under the responsibility of a CEN member into its own language and notified to the CEN Management Centre has the same status as the official versions. CEN members are the national standards bodies of Austria, Belgium, Bulgaria, Croatia, Cyprus, Czech Republic, Denmark

16、, Estonia, Finland, France, Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia, Lithuania, Luxembourg, Malta, Netherlands, Norway, Poland, Portugal, Romania, Slovakia, Slovenia, Spain, Sweden, Switzerland and United Kingdom. EUROPEAN COMMITTEE FOR STANDARDIZATION COMIT EUROPEN DE NORMALISATIO

17、N EUROPISCHES KOMITEE FR NORMUNG Management Centre: Avenue Marnix 17, B-1000 Brussels 2010 CEN All rights of exploitation in any form and by any means reserved worldwide for CEN national Members. Ref. No. EN ISO 15186-3:2010: EEN ISO 15186-3:2010 (E) Contents Page Foreword DIN EN ISO 15186-3:2010-12

18、 2 1 Scope 4 1.1 General4 1.2 Precision.4 2 Normative references 4 3 Terms and definitions5 4 Instrumentation7 4.1 General7 4.2 Calibration 8 5 Test arrangement.8 5.1 Rooms.8 5.2 Test specimen8 5.3 Mounting conditions .9 6 Test procedure.9 6.1 General9 6.2 Generation of sound field .9 6.3 Measuremen

19、t of the average sound pressure level over the surface of the test specimen in the source room .9 6.4 Measurement of the average sound intensity level on the receiving side.10 6.5 Background noise12 6.6 Frequency range of measurements .13 7 Expression of results 13 8 Test report 13 Annex A (normativ

20、e) Qualification.14 Annex B (informative) Estimated precision of the method .16 Bibliography 17 3EN ISO 15186-3:2010 (E) Foreword The text of ISO 15186-3:2002 has been prepared by Technical Committee ISO/TC 43 “Acoustics” of the International Organization for Standardization (ISO) and has been taken

21、 over as EN ISO 15186-3:2010 by Technical Committee CEN/TC 126 “Acoustic properties of building elements and of buildings” the secretariat of which is held by AFNOR. This European Standard shall be given the status of a national standard, either by publication of an identical text or by endorsement,

22、 at the latest by March 2011, and conflicting national standards shall be withdrawn at the latest by March 2011. Attention is drawn to the possibility that some of the elements of this document may be the subject of patent rights. CEN and/or CENELEC shall not be held responsible for identifying any

23、or all such patent rights. According to the CEN/CENELEC Internal Regulations, the national standards organizations of the following countries are bound to implement this European Standard: Austria, Belgium, Bulgaria, Croatia, Cyprus, Czech Republic, Denmark, Estonia, Finland, France, Germany, Greece

24、, Hungary, Iceland, Ireland, Italy, Latvia, Lithuania, Luxembourg, Malta, Netherlands, Norway, Poland, Portugal, Romania, Slovakia, Slovenia, Spain, Sweden, Switzerland and the United Kingdom. Endorsement notice The text of ISO 15186-3:2002 has been approved by CEN as a EN ISO 15186-3:2010 without a

25、ny modification. DIN EN ISO 15186-3:2010-12 3 1 Scope1.1 GeneralThis part of ISO 15186 specifies a sound intensity method to determine the sound reduction index and the element-normalized level difference of building elements at low frequencies. This method has significantly betterreproducibility in

26、 a typical test facility than those of ISO 140-3, ISO 140-10 and ISO 15186-1. The results are moreindependent of the room dimensions of the laboratory and closer to values that would be measured between roomsof volume greater than . This part of ISO 15186 is applicable in the frequency range to but

27、ismainly intended for the frequency range to .NOTE For elements faced with thick, porous absorbers, the recommended frequency range is to .The main differences between the methods of ISO 15186-1 and ISO 15186-3 are that in ISO 15186-3a) the sound pressure level of the source room is measured close t

28、o the surface of the test specimen, andb) the surface opposite the test specimen in the receiving room is highly absorbing and converts the roomacoustically into a duct with several propagating cross-modes above the lowest cut-on frequency.The results found by the method of ISO 15186-3 can be combin

29、ed with those of ISO 140-3 and ISO 15186-1 toproduce data in the frequency range to 1.2 PrecisionThe reproducibility of this intensity method is, for all frequencies, estimated to be equal to or better than that foundwith the method of ISO 140-3 at .Some comparisons of data obtained with the methods

30、 of this part of ISO 15186 and ISO 140-3 are given in annex B.2 Normative referencesThe following normative documents contain provisions which, through reference in this text, constitute provisions ofthis part of ISO 15186. For dated references, subsequent amendments to, or revisions of, any of thes

31、e publicationsdo not apply. However, parties to agreements based on this part of ISO 15186 are encouraged to investigate thepossibility of applying the most recent editions of the normative documents indicated below. For undated references,the latest edition of the normative document referred to app

32、lies. Members of ISO and IEC maintain registers ofcurrently valid International Standards.ISO 140-1, Acoustics Measurement of sound insulation in buildings and of building elements Part 1:Requirements for laboratory test facilities with suppressed flanking transmissionISO 140-3:1995, Acoustics Measu

33、rement of sound insulation in buildings and of building elements Part 3:Laboratory measurements of airborne sound insulation of building elements300 m350 Hz 160 Hz50 Hz 80 Hz50 Hz 80 Hz50 Hz 5 000 Hz.100 HzDIN EN ISO 15186-3:2010-12 EN ISO 15186-3:2010 (E) 4 ISO 140-10, Acoustics Measurement of soun

34、d insulation in buildings and of building elements Part 10:Laboratory measurement of airborne sound insulation of small building elementsISO 9614-1:1993, Acoustics Determination of sound power levels of noise sources using sound intensity Part 1: Measurement at discrete pointsIEC 60942, Electroacous

35、tics Sound calibratorsIEC 61043:1993, Electroacoustics Instruments for the measurement of sound intensity Measurement with pairsof pressure sensing microphones3 Terms and definitionsFor the purposes of this part of ISO 15186, the following terms and definitions apply.3.1average sound pressure level

36、on a test surfaceten times the common logarithm of the ratio of the surface and the time average of the sound pressure squared to thesquare of the reference sound pressureNOTE The surface average is taken over the entire test surface in the source room, including reflecting effects from the testspec

37、imen.3.2sound reduction indexten times the common logarithm of the ratio of the sound power, , incident on the test specimen to the soundpower, transmitted through the specimen(1)NOTE The expression “sound transmission loss” is also in use.3.3sound intensitytime-averaged rate of flow of sound energy

38、 per unit area oriented normal to the local particle velocityNOTE This is a vectorial quantity which is equal to(2)whereis the instantaneous sound pressure at a point, in pascals;is the instantaneous particle velocity at the same point, in metres per second;is the averaging time, in seconds.LpSRW1W2

39、R= 10 lgparenleftbiggW1W2parenrightbiggdBII =1TTintegraldisplay0p(t)u (t) dtWm2p(t)u (t)TDIN EN ISO 15186-3:2010-12 EN ISO 15186-3:2010 (E) 5 3.4normal sound intensitycomponent of the sound intensity in the direction normal to a measurement surface defined by the unit normal vector(3)where is the un

40、it normal vector directed out of the volume enclosed by the measurement surface3.5normal sound intensity levelten times the common logarithm of the ratio of the unsigned value of the normal sound intensity to the referenceintensity (4)where 3.6surface-pressure intensity indicatordifference between t

41、he sound pressure level, , and the normal sound intensity level, , on the measurementsurface, both being time and surface averaged(5)NOTE This notation is according to ISO 9614-2. In ISO 9614-1 the notation is used.3.7residual-pressure intensity indexdifference between the indicated sound pressure l

42、evel, , and the indicated sound intensity level, , when theintensity probe is placed and oriented in a sound field such that the sound intensity is zeroNOTE 1 It is expressed in decibels.NOTE 2 Details for determining are given in IEC 61043:(6)3.8intensity sound reduction indexfor one source room an

43、d one receiving room with an absorbing back wall, index defined by(7)whereis the average sound pressure level over the surface of the test specimen in the source room, in decibels;is the average normal sound intensity level over the measurement surface in the receiving room, indecibels;InnIn=I nnLIn

44、I0LIn= 10 lgparenleftbiggInI0parenrightbiggdBI0= 1012W/m2FpILpLInFpI= (LpLIn)dBF2pI0LpLIpI0pI0= (LpLI)dBRIRI=LpS9bracketleftbiggLIn+10 lgparenleftbiggSmSparenrightbiggbracketrightbiggdBLpSLInDIN EN ISO 15186-3:2010-12 EN ISO 15186-3:2010 (E) 6 is the total area of the measurement surface(s), in squa

45、re metres;is the area of the test specimen under test, in square metres.NOTE Equation (7) is valid for a test specimen with a reflecting surface in the source room. It will also work satisfactorily formoderately absorbing surfaces (e.g. surfaces covered with thick porous absorbers). For to thickabso

46、rbers, it is recommended to restrict the frequency range to to . For even thicker absorbers, the equation is nolonger valid.3.9intensity element normalized level differencedifference given by(8)whereis the average sound pressure level over the surface of the test specimen in the source room, in deci

47、bels;is the average normal sound intensity level over the measurement surface in the receiving room, indecibels;is the total area of the measurement surface(s), in square metres;is the number of small building element units installed within the measurement surface.NOTE Equation (8) is valid for a te

48、st specimen with a reflecting surface in the source room. It will also work satisfactorily formoderately absorbing surfaces (e.g. surfaces covered with thick porous absorbers). For to thickabsorbers, it is recommended to restrict the frequency range to to . For even thicker absorbers, the equation i

49、s nolonger valid.3.10measurement surfacesurface totally enclosing the test specimen on the receiving side, scanned or sampled by the probe during themeasurements3.11measurement distancedistance between the measurement surface and the specimen in a direction normal to the specimen3.12measurement sub-areapart of the measurement surface being measured with the intensity probe, using one continuous scan or discretepositions4 Instrumentation4.1 GeneralThe intensity measuring ins